/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
- * $Id$
***************************************************************************/
-#include "setup.h"
+#include <errno.h>
+#include "curl_setup.h"
+
#include "strtoofft.h"
-#ifdef NEED_CURL_STRTOLL
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
+/*
+ * NOTE:
+ *
+ * In the ISO C standard (IEEE Std 1003.1), there is a strtoimax() function we
+ * could use in case strtoll() doesn't exist... See
+ * https://www.opengroup.org/onlinepubs/009695399/functions/strtoimax.html
+ */
+
+#if (SIZEOF_CURL_OFF_T > SIZEOF_LONG)
+# ifdef HAVE_STRTOLL
+# define strtooff strtoll
+# else
+# if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_INTEGRAL_MAX_BITS >= 64)
+# if defined(_SAL_VERSION)
+ _Check_return_ _CRTIMP __int64 __cdecl _strtoi64(
+ _In_z_ const char *_String,
+ _Out_opt_ _Deref_post_z_ char **_EndPtr, _In_ int _Radix);
+# else
+ _CRTIMP __int64 __cdecl _strtoi64(const char *_String,
+ char **_EndPtr, int _Radix);
+# endif
+# define strtooff _strtoi64
+# else
+# define PRIVATE_STRTOOFF 1
+# endif
+# endif
+#else
+# define strtooff strtol
+#endif
+
+#ifdef PRIVATE_STRTOOFF
+
+/* Range tests can be used for alphanum decoding if characters are consecutive,
+ like in ASCII. Else an array is scanned. Determine this condition now. */
+
+#if('9' - '0') != 9 || ('Z' - 'A') != 25 || ('z' - 'a') != 25
+
+#define NO_RANGE_TEST
+
+static const char valchars[] =
+ "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+#endif
static int get_char(char c, int base);
/**
- * Emulated version of the strtoll function. This extracts a long long
+ * Custom version of the strtooff function. This extracts a curl_off_t
* value from the given input string and returns it.
*/
-curl_off_t
-Curl_strtoll(const char *nptr, char **endptr, int base)
+static curl_off_t strtooff(const char *nptr, char **endptr, int base)
{
char *end;
int is_negative = 0;
/* Skip leading whitespace. */
end = (char *)nptr;
- while (isspace((int)end[0])) {
+ while(ISSPACE(end[0])) {
end++;
}
/* Handle the sign, if any. */
- if (end[0] == '-') {
+ if(end[0] == '-') {
is_negative = 1;
end++;
}
- else if (end[0] == '+') {
+ else if(end[0] == '+') {
end++;
}
- else if (end[0] == '\0') {
+ else if(end[0] == '\0') {
/* We had nothing but perhaps some whitespace -- there was no number. */
- if (endptr) {
+ if(endptr) {
*endptr = end;
}
return 0;
}
/* Handle special beginnings, if present and allowed. */
- if (end[0] == '0' && end[1] == 'x') {
- if (base == 16 || base == 0) {
+ if(end[0] == '0' && end[1] == 'x') {
+ if(base == 16 || base == 0) {
end += 2;
base = 16;
}
}
- else if (end[0] == '0') {
- if (base == 8 || base == 0) {
+ else if(end[0] == '0') {
+ if(base == 8 || base == 0) {
end++;
base = 8;
}
/* Matching strtol, if the base is 0 and it doesn't look like
* the number is octal or hex, we assume it's base 10.
*/
- if (base == 0) {
+ if(base == 0) {
base = 10;
}
/* Loop handling digits. */
value = 0;
overflow = 0;
- for (i = get_char(end[0], base);
- i != -1;
- end++, i = get_char(end[0], base)) {
+ for(i = get_char(end[0], base);
+ i != -1;
+ end++, i = get_char(end[0], base)) {
newval = base * value + i;
- if (newval < value) {
+ if(newval < value) {
/* We've overflowed. */
overflow = 1;
break;
value = newval;
}
- if (!overflow) {
- if (is_negative) {
+ if(!overflow) {
+ if(is_negative) {
/* Fix the sign. */
value *= -1;
}
}
else {
- if (is_negative)
- value = 0x8000000000000000L;
+ if(is_negative)
+ value = CURL_OFF_T_MIN;
else
- value = 0x7FFFFFFFFFFFFFFFL;
+ value = CURL_OFF_T_MAX;
errno = ERANGE;
}
- if (endptr)
+ if(endptr)
*endptr = end;
return value;
*/
static int get_char(char c, int base)
{
+#ifndef NO_RANGE_TEST
int value = -1;
- if (c <= '9' && c >= '0') {
+ if(c <= '9' && c >= '0') {
value = c - '0';
}
- else if (c <= 'Z' && c >= 'A') {
+ else if(c <= 'Z' && c >= 'A') {
value = c - 'A' + 10;
}
- else if (c <= 'z' && c >= 'a') {
+ else if(c <= 'z' && c >= 'a') {
value = c - 'a' + 10;
}
+#else
+ const char *cp;
+ int value;
+
+ cp = memchr(valchars, c, 10 + 26 + 26);
+
+ if(!cp)
+ return -1;
- if (value >= base) {
+ value = cp - valchars;
+
+ if(value >= 10 + 26)
+ value -= 26; /* Lowercase. */
+#endif
+
+ if(value >= base) {
value = -1;
}
return value;
}
#endif /* Only present if we need strtoll, but don't have it. */
+
+/*
+ * Parse a *positive* up to 64 bit number written in ascii.
+ */
+CURLofft curlx_strtoofft(const char *str, char **endp, int base,
+ curl_off_t *num)
+{
+ char *end;
+ curl_off_t number;
+ errno = 0;
+ *num = 0; /* clear by default */
+
+ DEBUGASSERT(str);
+
+ while(*str && ISSPACE(*str))
+ str++;
+ if('-' == *str) {
+ if(endp)
+ *endp = (char *)str; /* didn't actually move */
+ return CURL_OFFT_INVAL; /* nothing parsed */
+ }
+ number = strtooff(str, &end, base);
+ if(endp)
+ *endp = end;
+ if(errno == ERANGE)
+ /* overflow/underflow */
+ return CURL_OFFT_FLOW;
+ else if(str == end)
+ /* nothing parsed */
+ return CURL_OFFT_INVAL;
+
+ *num = number;
+ return CURL_OFFT_OK;
+}
projects / platform / upstream / curl.git / blobdiff